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PIC16F877 SERIES I/O CIRCUIT ANALOG CONTROL SYSTEM PLC SAMPLER

I/O control analog sampler plc system based on microchip pic16f877 circuit output serial rs232 pc connection is used the uln2003 in max232 IC with sag.

Circuit diagram Download files
Tags: #current#plc-system#temperature
Muhammad Bilal By Muhammad Bilal
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CategoryHome Automation & Security
PIC modelPIC16F877A
IncludesCircuit diagram · Download files
Reading time~2 min

Summary of PIC16F877 SERIES I/O CIRCUIT ANALOG CONTROL SYSTEM PLC SAMPLER

This article describes a PIC16F877-based I/O control analog sampler PLC system. It features serial RS232 PC connectivity using ULN2003 and MAX232 ICs, supporting 10-bit digital inputs (0-16V, 0-5V, 0-25V), temperature, and light sensing via LDR. The system includes high-current digital outputs with relay-based closed-loop control, ±1°C temperature accuracy, and an onboard buzzer. A 32-bit Windows software provides spreadsheet logging and CRO-style graph plotting.

Parts used in the PIC16F877 Series I/O Circuit Analog Control System PLC Sampler:

  • Microchip PIC16F877 microcontroller
  • ULN2003 IC
  • MAX232 IC
  • SAG (Serial Adapter Generator)
  • PCB diagram
  • 32-bit Windows control program
  • Temperature sensor
  • LDR (Light Dependent Resistor)
  • Two relays
  • Buzzer

I/O control analog sampler plc system based on microchip pic16f877 circuit output serial rs232 pc connection is used the uln2003 in max232 IC with sag. pcb diagram 32-bit windows control program in other drawings, and is written in the... Electronics Projects, PIC16F877 Series I/O Circuit Analog Control System PLC Sampler "microchip projects, microcontroller projects, pic assembly example, pic16f877 projects,

PIC16F877 SERIES I O CIRCUIT ANALOG CONTROL SYSTEM PLC SAMPLER

I/O control analog sampler plc system based on microchip pic16f877 circuit output serial rs232 pc connection is used the uln2003 in max232 IC with sag. pcb diagram 32-bit windows control program in other drawings, and is written in the source files, pressing the hex.

PIC16F877 I/O PROJECT

PIC16F877 I O PROJECT

rugget 10 bit digital input port (0-16volt) 0-5volt and 0-25volt analog voltaga inputs temperature and light sensing (ldr) inputs high current 10 bit digital output port closed loop control using two relays serial interfaca (2400 bits/s, inverted)

temperature accuacy: +- 1 c on board system timers plus buzzer 32 bit windows based software full function spreadsheet logger CRO-style analog graph plotter combination I/O “and or” logic

Source: http://www.siliconchip.com.au/cms/A_105433/article.html

PIC16F877 Series I/O Circuit Analog Control schematic pcb source code alternative links:

FILE DOWNLOAD LINK LIST (in TXT format): LINKS-5530.zip

Source: PIC16F877 SERIES I/O CIRCUIT ANALOG CONTROL SYSTEM PLC SAMPLER

  • What components are used for the serial interface?
    The system uses the ULN2003 and MAX232 IC with SAG for the RS232 PC connection.
  • How accurate is the temperature measurement on this system?
    The on-board temperature accuracy is plus or minus 1 degree Celsius.
  • Can this project handle analog voltage inputs?
    Yes, it supports 10-bit digital input ports for 0-16 volt, 0-5 volt, and 0-25 volt analog voltage inputs.
  • What type of output control does the system provide?
    It offers a high current 10-bit digital output port with closed loop control using two relays.
  • Does the system include light sensing capabilities?
    Yes, the project includes inputs for light sensing using an LDR.
  • What software features are included in the 32-bit Windows program?
    The software functions as a full function spreadsheet logger and a CRO-style analog graph plotter.
  • What logic operations can the I/O perform?
    The I/O supports and or logic operations.
  • What is the baud rate for the serial interface?
    The serial interface operates at 2400 bits per second with inverted signaling.
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Muhammad Bilal

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